| canulate | (verb) introduce a cannula or tube into | Synonyms: cannulate, cannulise, cannulize, intubate |
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| capacitate | (verb) make capable | - |
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| (verb) cause (spermatozoa) to undergo the physical changes necessary to fertilize an egg | - |
| (verb) make legally capable or qualify in law | - |
| capitate | (adjective) being abruptly enlarged and globose at the tip | - |
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| (noun) the wrist bone with a rounded head shape that articulates with the 3rd metacarpus | Synonyms: capitate bone, os capitatum |
| capitulate | (verb) surrender under agreed conditions | - |
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| capote | (noun) a long cloak with a hood that can be pulled over the head | Synonyms: hooded cloak |
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| (noun) a long overcoat with a hood that can be pulled over the head | Synonyms: hooded coat |
| capsulate | (adjective) used of seeds or spores that are enclosed in a capsule | Synonyms: capsulated |
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| (verb) enclose in a capsule | Synonyms: capsule, capsulise, capsulize |
| captivate | (verb) attract; cause to be enamored | Synonyms: becharm, beguile, bewitch, capture, catch, charm, enamor, enamour, enchant, entrance, fascinate, trance |
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| carbamate | (noun) a salt (or ester) of carbamic acid | - |
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| carbohydrate | (noun) an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain | Synonyms: saccharide, sugar |
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| carbonate | (noun) a salt or ester of carbonic acid (containing the anion CO3) | - |
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| (verb) treat with carbon dioxide | - |
| (verb) turn into a carbonate | - |
| carboxylate | (verb) treat (a chemical compound) with carboxyl or carboxylic acid | - |
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| cardinalate | (noun) the office of cardinal | Synonyms: cardinalship |
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| (noun) (Roman Catholic Church) the body of all cardinals of the church; elects and advises the pope | Synonyms: College of Cardinals, Sacred College, Sacred College of Cardinals |
| carinate | (adjective) having a ridge or shaped like a ridge or suggesting the keel of a ship | Synonyms: carinated, keeled, ridged |
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| (noun) birds having keeled breastbones for attachment of flight muscles | Synonyms: carinate bird, flying bird |
| carnallite | (noun) a white or reddish mineral consisting of hydrous chlorides of potassium and magnesium; used as a fertilizer and as a source of potassium and magnesium | - |
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| carnotite | (noun) a yellow radioactive mineral; an ore of uranium and radium and vanadium | - |
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| carpellate | (adjective) bearing or consisting of carpels | Synonyms: pistillate |
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| carte | (noun) a list of dishes available at a restaurant | Synonyms: bill of fare, card, carte du jour, menu |
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| carunculate | (adjective) having a caruncle | Synonyms: carunculated |
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| caseate | (verb) become cheeselike | - |
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| (verb) turn into cheese | - |
| cassette | (noun) a container that holds a magnetic tape used for recording or playing sound or video | - |
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| cassiterite | (noun) a hard heavy dark mineral that is the chief source of tin | - |
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| caste | (noun) in some social insects (such as ants) a physically distinct individual or group of individuals specialized to perform certain functions in the colony | - |
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| (noun) a social class separated from others by distinctions of hereditary rank or profession or wealth | - |
| (noun) (Hinduism) a hereditary social class among Hindus; stratified according to ritual purity | - |
| (noun) social status or position conferred by a system based on class | - |
| castigate | (verb) censure severely | Synonyms: chasten, chastise, correct, objurgate |
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| (verb) inflict severe punishment on | - |
| castrate | (noun) a man who has been castrated and is incapable of reproduction | Synonyms: eunuch |
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| (verb) remove the testicles of a male animal | Synonyms: demasculinise, demasculinize, emasculate |
| (verb) remove the ovaries of | Synonyms: alter, neuter, spay |
| (verb) deprive of strength or vigor | Synonyms: emasculate |
| (verb) edit by omitting or modifying parts considered indelicate | Synonyms: bowdlerise, bowdlerize, expurgate, shorten |
| catamite | (noun) a boy who submits to a sexual relationship with a man | - |
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| catenate | (verb) arrange in a series of rings or chains, as for spores | Synonyms: catenulate |
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| catenulate | (adjective) having a chainlike form | Synonyms: chainlike |
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| (verb) arrange in a series of rings or chains, as for spores | Synonyms: catenate |
| catkinate | (adjective) resembling a catkin | - |
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| caudate | (adjective) having a tail or taillike appendage | Synonyms: caudated |
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| (adjective) (of a leaf shape) tapering gradually into a long taillike tip | - |
| (noun) amphibians that resemble lizards | Synonyms: urodele |
| (noun) a tail-shaped basal ganglion located in a lateral ventricle of the brain | Synonyms: caudate nucleus |
| celebrate | (verb) have a celebration | Synonyms: fete |
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| (verb) behave as expected during of holidays or rites | Synonyms: keep, observe |
| (verb) assign great social importance to | Synonyms: lionise, lionize |
| celestite | (noun) a mineral consisting of strontium sulphate | - |
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| celibate | (adjective) abstaining from sexual intercourse | Synonyms: continent |
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| (noun) an unmarried person who has taken a religious vow of chastity | - |
| cellulite | (noun) lumpy deposits of body fat especially on women's thighs etc. | - |
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| cementite | (noun) a chemical compound that is a constituent of steel and cast iron; very hard and brittle | Synonyms: iron carbide |
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| cenobite | (noun) a member of a religious order living in common | Synonyms: coenobite |
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| centrifugate | (verb) rotate at very high speed in order to separate the liquids from the solids | Synonyms: centrifuge |
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| cephalochordate | (noun) fish-like animals having a notochord rather than a true spinal column | - |
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| cerate | (noun) a hard medicated paste made of lard or oil mixed with wax or resin | - |
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| cerebrate | (verb) use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments | Synonyms: cogitate, think |
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| certificate | (noun) a document attesting to the truth of certain stated facts | Synonyms: certification, credential, credentials |
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| (noun) a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends | Synonyms: security |
| (verb) authorize by certificate | - |
| (verb) present someone with a certificate | - |
| cerussite | (noun) a mineral consisting of lead carbonate that is an important source of lead | Synonyms: white lead ore |
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| ceylonite | (noun) a dark-colored spinel containing iron | Synonyms: pleonaste |
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| chabasite | (noun) a group of minerals of the zeolite family consisting of a hydrous silicate of calcium and aluminum | Synonyms: chabazite |
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| chabazite | (noun) a group of minerals of the zeolite family consisting of a hydrous silicate of calcium and aluminum | Synonyms: chabasite |
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| chalcanthite | (noun) hydrated blue crystalline form of copper sulfate | Synonyms: blue copperas, blue stone, blue vitriol |
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| chalcocite | (noun) a heavy grey mineral that is an ore of copper | Synonyms: copper glance |
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| chalcopyrite | (noun) a yellow copper ore (CuFeS2) made up of copper and iron sulfide | Synonyms: copper pyrites |
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| chalybeate | (adjective) containing or impregnated with or tasting of iron | - |
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| chalybite | (noun) iron ore in the form of ferrous carbonate | Synonyms: siderite |
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| chamosite | (noun) a greenish grey or black silicate of iron and aluminum | - |
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| charlotte | (noun) a mold lined with cake or crumbs and filled with fruit or whipped cream or custard | - |
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| chaste | (adjective) morally pure (especially not having experienced sexual intercourse) | - |
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| (adjective) abstaining from unlawful sexual intercourse | - |
| (adjective) pure and simple in design or style | - |
| chaturbate | (verb) to masturbate while chatting online | - |
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| cheapskate | (noun) a miserly person | Synonyms: tightwad |
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| checkmate | (noun) a chess move constituting an inescapable and indefensible attack on the opponent's king | Synonyms: mate |
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| (noun) complete victory | - |
| (verb) place an opponent's king under an attack from which it cannot escape and thus ending the game | Synonyms: mate |
| chelate | (adjective) having or resembling chelae or claws | - |
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| (adjective) relating to or characterized by chelation | Synonyms: chelated |
| (noun) a heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions | Synonyms: chelate compound |
| (verb) form a chelate, in chemistry | - |
| chelicerate | (adjective) of or relating to or resembling chelicerae | Synonyms: cheliceral |
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| chlorate | (noun) any salt of chloric acid | - |
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| chlorinate | (verb) disinfect with chlorine | - |
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| (verb) treat or combine with chlorine | - |
| chlorite | (noun) a generally green or black mineral; it occurs as a constituent of many rocks typically in the form of a flat crystal | - |
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| chlorophyte | (noun) algae that are clear green in color; often growing on wet ricks or damp wood or the surface of stagnant water | Synonyms: green algae |
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| chloroplatinate | (noun) any salt of chloroplatinic acid. | - |
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| choanocyte | (noun) any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body | Synonyms: collar cell |
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| chocolate | (noun) a medium brown to dark-brown color | Synonyms: burnt umber, coffee, deep brown, umber |
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| (noun) a food made from roasted ground cacao beans | - |
| (noun) a beverage made from cocoa powder and milk and sugar; usually drunk hot | Synonyms: cocoa, drinking chocolate, hot chocolate |
| chondrite | (noun) a rock of meteoric origin containing chondrules | - |
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| chordate | (adjective) of or relating to or characteristic of the Chordata | - |
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| (noun) any animal of the phylum Chordata having a notochord or spinal column | - |
| chromate | (noun) any salt or ester of chromic acid | - |
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| chromite | (noun) a brownish-black mineral; the major source of chromium | - |
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| chrysolite | (noun) a brown or yellow-green olivine found in igneous and metamorphic rocks and used as a gemstone | - |
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| chute | (noun) sloping channel through which things can descend | Synonyms: slide, slideway, sloping trough |
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| (noun) rescue equipment consisting of a device that fills with air and retards your fall | Synonyms: parachute |
| (verb) jump from an airplane and descend with a parachute | Synonyms: jump, parachute |
| cigarette | (noun) finely ground tobacco wrapped in paper; for smoking | Synonyms: butt, cigaret, coffin nail, fag |
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| ciliate | (adjective) of or relating to the human eyelash | Synonyms: ciliary |
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| (adjective) of or relating to cilia projecting from the surface of a cell | Synonyms: cilial, ciliary |
| (adjective) having a margin or fringe of hairlike projections | Synonyms: ciliated |
| (noun) a protozoan with a microscopic appendage extending from the surface of the cell | Synonyms: ciliated protozoan, ciliophoran |
| circinate | (adjective) shaped like a ring | Synonyms: annular, annulate, annulated, doughnut-shaped, ring-shaped, ringed |
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| circulate | (verb) cause to become widely known | Synonyms: broadcast, circularise, circularize, diffuse, disperse, disseminate, distribute, pass around, propagate, spread |
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| (verb) become widely known and passed on | Synonyms: go around, spread |
| (verb) move around freely from person to person or from place to place | - |
| (verb) move through a space, circuit or system, returning to the starting point | - |
| (verb) cause to be distributed | Synonyms: distribute, pass around, pass on |
| (verb) cause to move in a circuit or system | - |
| circumambulate | (verb) walk around something | Synonyms: walk around |
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| circumnavigate | (verb) travel around, either by plane or ship | Synonyms: compass |
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| circumstantiate | (verb) give circumstantial evidence for | - |
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| circumvallate | (verb) surround with or as if with a rampart or other fortification | - |
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| circumvolute | (verb) wind or turn in volutions, especially in an inward spiral, as of snail | - |
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| cite | (noun) a short note recognizing a source of information or of a quoted passage | Synonyms: acknowledgment, citation, credit, mention, quotation, reference |
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| (verb) make reference to | Synonyms: advert, bring up, mention, name, refer |
| (verb) commend | Synonyms: mention |
| (verb) repeat a passage from | Synonyms: quote |
| (verb) refer to for illustration or proof | Synonyms: quote |
| (verb) advance evidence for | Synonyms: abduce, adduce |
| (verb) call in an official matter, such as to attend court | Synonyms: summon, summons |
| (verb) refer to | Synonyms: reference |
| citrate | (noun) a salt or ester of citric acid | - |
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| (verb) cause to form a salt or ester of citric acid | - |
| classmate | (noun) an acquaintance that you go to school with | Synonyms: class fellow, schoolfellow, schoolmate |
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| clathrate | (adjective) designating or relating to a compound in which one component is physically enclosed within the crystal structure of another | - |
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| (adjective) having a latticelike structure pierced with holes or windows | Synonyms: cancellate, cancellated |
| climate | (noun) the weather in some location averaged over some long period of time | Synonyms: clime |
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| (noun) the prevailing psychological state | Synonyms: mood |
| clofibrate | (noun) a drug (trade name Atromid-S) that reduces lipids in the blood serum; used to treat some cardiovascular diseases | Synonyms: Atromid-S |
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| coagulate | (adjective) transformed from a liquid into a soft semisolid or solid mass | Synonyms: coagulated, curdled, grumose, grumous |
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| (verb) change from a liquid to a thickened or solid state | Synonyms: clot |
| (verb) cause to change from a liquid to a solid or thickened state | Synonyms: clot |
| coarctate | (adjective) (of an insect pupa) enclosed in a rigid case | - |
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| cobaltite | (noun) a rare silvery-white mineral; important ore of cobalt | - |
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| cocotte | (noun) a small casserole in which individual portions can be cooked and served | - |
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| (noun) a woman who engages in sexual intercourse for money | Synonyms: bawd, cyprian, fancy woman, harlot, lady of pleasure, prostitute, sporting lady, tart, whore, woman of the street, working girl |
| coeducate | (verb) educate persons of both sexes together | Synonyms: co-educate |
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| coelenterate | (noun) radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms | Synonyms: cnidarian |
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| coenobite | (noun) a member of a religious order living in common | Synonyms: cenobite |
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| cogitate | (verb) use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments | Synonyms: cerebrate, think |
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| (verb) consider carefully and deeply; reflect upon; turn over in one's mind | - |
| cognate | (adjective) related by blood | Synonyms: akin, blood-related, consanguine, consanguineal, consanguineous, kin |
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| (adjective) having the same ancestral language | - |
| (adjective) related in nature | Synonyms: connate |
| (noun) a word is cognate with another if both derive from the same word in an ancestral language | Synonyms: cognate word |
| (noun) one related by blood or origin; especially on sharing an ancestor with another | Synonyms: blood relation, blood relative, sib |
| cognoscente | (noun) an expert able to appreciate a field; especially in the fine arts | Synonyms: connoisseur |
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| collaborate | (verb) work together on a common enterprise or project | Synonyms: cooperate, join forces |
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| (verb) cooperate as a traitor | - |
| collate | (verb) compare critically; of texts | - |
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| (verb) to assemble in proper sequence | - |
| collegiate | (adjective) of or resembling or typical of a college or college students | Synonyms: collegial |
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| colligate | (verb) consider (an instance of something) as part of a general rule or principle | Synonyms: subsume |
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| (verb) make a logical or causal connection | Synonyms: associate, connect, link, link up, relate, tie in |
| collimate | (verb) adjust the line of sight of (an optical instrument) | - |
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| (verb) make or place parallel to something | Synonyms: parallel |